Machine for filling receptacles



Oct. 22, 1940. J. DlCHTER MACHINE FOR FILLING RECEPTACLES Filed Jan. 7. 1938 Hlil IL" .1 n MU Patented Oct. 22, 1940 2,219,223 mom FOR mums RECEPTACLES Jakob Dichter, Berlinrschoneberg, Germany Application January 7, 1938, Serial No. 183,909

In Germany January 6,1937

Claims.

. Fig. 3 isa fragmentaryside elevation of a nozzle and suction cup;

Fig. 4 is a fragmentary front view of the nozzles and centering means; and p Fig. 5 is a fragmentary. top plan view of the centering mechanism.

In the description and thedrawing the ma chine is employed for small cylindrical receptacles produced from glass tubes, such as they arev used for receiving oils and essences; however, the nia-v chine according to the present invention can be employed for other purposes and is not limited to these examples. h

Upon the base plate I is fixed a journal block or pedestal 2 in which the shaft 3 is rotatably mounted. Upon the upper end of this shaft is fixed a disc 5, provided with holders 5 for the receptacles 6. Suitable indexing means (not shown) are provided for moving the receptacles intermittently a predetermined distance, this distance being equal to the distance between successive stations corresponding to the positions of the filling and suction nozzles as well as the position of a receptacle feeler and ejector mechanism. The receptacle 6, guided laterally in the sleeve or bushing 5 by the ring 32 at the bottom thereof,

is conducted during the further indexing thereof successively through-the single working positions.

After the receptacles 6 are positioned in the sleeve or bushing 5, they are moved to the sta- 40 tion in which the contact device or feeling device is brought into action, in order to determine if a receptacle for any reason is wrongly placed in the sleeve, because 'if a receptacle were positioned on the guide ring with its bottom towards the top 45 in the filling position, the filling pipewould be damaged.

The feeling device illustrated in Figure 2 operates in the following manner:

Upon the table plate I a rod 39 capable of being raised and lowered is guided in the bearing 38 provided with guides, there being fixed upon the upper end .of the rod the arm 40 with the feeling pin 4| in such a manner that it is in axial alignment with the receptacle. The rod 39 is raised 55 sufliciently during each working operation by the UNITED. STATES PATENT orrlca cam 42 that the receptacle 6 passes underneath the, pin 41 during the indexing step. In this working position the ring 32 is interrupted or recessed. This interruption, however, is covered by a piece 44 arranged on the rockable double lever 5 43. The double lever 43 is rocked by the cam 47. Upon the double lever 43 and underneath the upper end thereof, is arranged an abutment 45', whilst the piece 46 serving as a guide, is fixed on the guide bar 39. I 10 Duringlowering of the bar 39 by gravity on the sloping edge of the cam 42, the pin 4i enters the mouth orifice of the receptacle 6, and the piece 4B is opposite the stop 45. The double lever 43 is prevented from being rocked further, and is 1 maintained positively in this position so that the receptacle .6 as the latter is supported by the piece 44, remains in the bushing or sleeve 5. If, however, the receptacle is placed with the closed end thereof uppermost, movement of the pin 41 is resisted during lowering of the bar 39 and remains in a position in which the stop 45 may swing past the locking piece 46 if the cam 41 is rotated. The piece '44 supporting the receptacle is then also moved out of alignment with the recess in ring 32 and the receptacle falls from the sleeve 5 into a container, not illustrated in the drawing.

From the ejector station, the receptacle is moved to the filling position, in which, by means of a pump 63 operated periodically, a measured quantity of liquid is forced into the receptacle.

A- filling pipe 50 is screwed on the outlet tube 48 (Figure 7) and adapted to register with the receptacle orifice or mouth, the receptacle being filled approximately up to its mouth. By means of a second pump 63 located at the next station a part of the liquid is withdrawn, the height ofthe suction tube being adjustable with respect to the mouth of the receptacle so that despite the unequal carrying capacity of the receptacles they 0 are all filled to the same height. Both the pumps are connected with the reservoir 5| insuch a manner that at the filling station the pump draws the liquid from the reservoir 5! and forces it into the receptacle 6 whilst the pump at the suction or excess station draws any excess filled quantity from the receptacle 6 and returns the liquid to the reservoir 5!. When the receptacles reach the filling and excess stations they are lifted over the lower ends of the filling tube 50 or suction pipe 60 by means of pins 52 and 53 engaging the bottom of the receptacles, whereupon the piston oi the charging pump is operated through rocker arm I54 by the cam .54 and the piston of l the suction pump through rocker arm I by the 55 cam 85. The quantity of filling is adjustable by variation of the piston stroke. I

The raising of the receptacles by the plus I! and 83 arranged adiustably on the double piece Bl is obtained through the bar llv guided in the bearing 51 by means of rocker" arm I" and the cam 59.

As illustrated in Figs. 1 and 3, suction rings 6|, ii are arranged around the filling tube Ill and suction pipe 60, which rings surround the latter and are connected by the hose 62, '2' with pump 63'. On the double piece 56 is suction fixed the bar 84 with the double carrying arms 8, upon which double piece are fixed both the suction rings I .raised and lowered with the receptacles by the bars 58 andto such an extent that the suction rings may remove the drops formed on the nozzles during filling and during emptying of the liquid. If these drops tend to soil the external wall 01 the bottle diificulties arising during labelling are obviated, as well as loss of material incident to the filling of a good many bottles.

The pin 58 is yieldingly mounted by spring means on the arm I, so that it can raise the receptacle only to a height determined by the set screw 88. This stop is located on the suction pump, and limits the elevation of thesuction ring 6|. The adjustable stop determines the filling height by varying of the distance between the stop and the orifice of the suction tube '0, for the liquid is withdrawn onlyso far as the suction tube can enter the mouth 01 the receptacle.

In Fig. 4, a centering device is arranged for each of the receptacles, in order to position accurately the narrow openings of the neck of the receptacles over the ends of the filling and suction pipes of the pumps. These centering devices, which are operated simultaneously at the filling and excess stations, consist of two pairs of pivoted legs il'l having a smoothpositive movement, which legs have in the position of contact with the receptacles, a recess adapted to the contour of the receptacle so that each pair of plier legs surrounds the receptacle. The legs are moved towards each other until they bear against the wall 01' the glass receptacle, being contracted by springs. When the receptacles 6 are raised by the-pins 52, 53, through the sleeves I over the ends of tubes 80, 80, the neck or the cylindrical part of the receptacle respectively strikes against the pivoted legs H1, which are axially aligned with the filling and suction pipes. As the legs are contracted together by the action of the spring, the receptacle may be drawn between the legs, whereby it is slightly jammed and in consequence of the action or the positive connection of the legs is guided into axial alignment with the filling and suction pipes.

The pin III is connected with the rod 04 and same opens the centering device, the

when lowered the lower conical end Iii of the slide pieces Iii moving the legs I", these slide pieces being mounted in the guide I20 when the receptacles are filled to the proper height. This is eil'ected by lowering the slide piece 58 and in consequence the pins 61, 51. Moreover, during the lowering of the receptacles they are supported by the tubes ill, 60, through lowering. of the suction ring I to the end of the pipes.

I claim:

1. In a machine for filling receptacles, a filling nozzle, means for supplying liquid under pressure to said nozzle, means for positioning a receptacle in axial alignment with said nozzle, a reciprocating feeler adapted to enter the mouth of a receptacle, and means associated with said feeler for ejecting receptacles from said positioning'means except when the mouth 01' thereceptacle is directed towards said nozzle.

2. In a machine for filling receptacles, a filling nozzle, a suction nozzle for withdrawing a predetermined amount of liquid from filled receptacles, means for positioning a pair of spaced receptacles in axial alignment with said filling and suction nozzles respectively, means for simultaneously elevating said receptacles to position the mouth of one of the receptacles over said filling nozzle and the other of said receptacles over said suction nozzle and means for transferring a receptacle from said filling nozzle to said suction nozzle.

3. In a machine for filling receptacles, a filling nozzle, a suction nozzle for withdrawing a predetermined amount of liquid from filled receptacles, means for positioning spaced receptacles in axial alignment with said nozzles, and other suction means surrounding said nozzles and adapted to withdraw surplus liquid adhering to the ends and surfaces of said nozzles.

4. In a machine for filling receptacles, a filling nozzle, a suction nozzle for withdrawing a predetermined amount of liquid from filled receptacles, means for positioning spaced receptacles in axial alignment with said nozzles, and an annular suction member surroundingeach of said nozzles and adapted to withdraw surplus liquid adhering to the ends and surfaces of said nozzles.

5. In a machine for filling receptacles, a filling nozzle, a suction nozzle for withdrawing a predetermined amount of liquid from filled receptacles, means for positioning spaced receptacles in axial alignment with said nozzles, and an annular suction member surrounding each of said nozzlesand adapted to withdraw surplus liquid adhering to the ends and surfaces of said nozzles, said annular members constituting additional positioning means for centering the receptacles with respect to said nozzles. 

